The lsa-originate-interval command sets the interval for updating OSPF LSAs.
The undo lsa-originate-interval command restores the default setting.
By default, an intelligent timer is enabled. The interval for updating LSAs is expressed in milliseconds. The maximum interval for updating LSAs is 5000 milliseconds (ms), the initial interval is 500 ms, and the Holdtime interval is 1000 ms.
lsa-originate-interval 0
lsa-originate-interval intelligent-timer max-interval start-interval hold-interval [ other-type interval ]
lsa-originate-interval other-type interval [ intelligent-timer max-interval start-interval hold-interval ]
lsa-originate-interval suppress-flapping suppress-interval [ threshold threshold ]
undo lsa-originate-interval
undo lsa-originate-interval suppress-flapping suppress-interval
| Parameter | Description | Value |
|---|---|---|
| 0 | Specifies the interval for updating LSAs to 0; that is, the 5-second interval is canceled. | - |
| intelligent-timer | Sets the interval for updating OSPF router LSAs and network LSAs through an intelligent timer. | - |
| max-interval | Specifies the maximum interval for updating OSPF LSAs. | The value is an integer ranging from 1 to 120000, in milliseconds. The default value is 5000. |
| start-interval | Specifies the initial interval for updating OSPF LSAs. | The value is an integer ranging from 0 to 60000, in milliseconds. The default value is 500. |
| hold-interval | Specifies the Holdtime interval for updating OSPF LSAs. | The value is an integer ranging from 1 to 60000, in milliseconds. The default value is 1000. |
| other-type | Sets the interval for updating LSAs, excluding OSPF router LSAs and network LSAs. | - |
| interval | Specifies the interval for updating LSAs. | The value is an integer ranging from 0 to 10, in seconds. The default value is 5. |
| suppress-flapping suppress-interval | Specifies an OSPF LSA suppression period. | The value is an integer ranging from 0 to 600, in seconds. The default value is 10 seconds. |
| threshold threshold | Specifies an OSPF LSA suppression threshold. | The value is an integer ranging from 3 to 100. The default value is 30. |
Usage Scenario
To prevent frequent LSA updates caused by network connection or frequent route flapping, you can set the interval for receiving LSAs using this command. A router receives LSAs only when it meets the set interval.
In a stable network where routes need to be fast converged, you can set the interval for receiving LSAs at millisecond level to update LSAs in time. The change of the topology or the route, therefore, can be immediately detected, and LSDB synchronization speed is improved.
To configure the maximum LSA suppression period, run the lsa-originate-interval suppress-flapping command. If frequent LSA flapping occurs, the larger value between lsa-originate-interval suppress-flapping and lsa-originate-interval is used to suppress LSA flapping.
If there is no special requirement for the network, using the default value is recommended.
Configuration Impact
Precautions
The interval for updating LSAs set by using the lsa-originate-interval command should be equal to or bigger than the interval for receiving LSAs set by using the lsa-arrival-interval command. This prevents too much network bandwidth and device resources from being consumed due to network connections or frequent route flapping.